Decay rate and renormalized frequency shift of a quantum wire Wannier exciton in a planar microcavity

Chen, Yueh-Nan; Chuu, Der–San; Brandes, Tobias; Krämer, B.

doi:10.1103/physrevb.64.125307

Cited by 13 publications

(13 citation statements)

References 26 publications

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“…Inter-QW superradiant coupling can be induced and/or employed in multiple-QW periodic structures with Bragg resonances [128][129][130][131], quasi-periodic Fibonacci multiple-QW structures [132], and quasi-periodic double-period QW structures [133]. Moreover, theoretical studies of excitonic SR in quantum wires [134][135][136] and quantum dots [105][106][107][108][109][110][111] have provided additional predictions and incentives for experimental studies.…”

Section: A Excitonic Superradiance In Semiconductormentioning

confidence: 99%

Dicke superradiance in solids [Invited]

et al. 2016

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Recent advances in optical studies of condensed matter systems have led to the emergence of a variety of phenomena that have conventionally been studied in the realm of quantum optics. These studies have not only deepened our understanding of light-matter interactions but also introduced aspects of many-body correlations inherent in optical processes in condensed matter systems. This article is concerned with the phenomenon of superradiance (SR), a profound quantum optical process originally predicted by Dicke in 1954. The basic concept of SR applies to a general N -body system where constituent oscillating dipoles couple together through interaction with a common light field and accelerate the radiative decay of the whole system. Hence, the term SR ubiquitously appears in order to describe radiative coupling of an arbitrary number of oscillators in many situations in modern science of both classical and quantum description. In the most fascinating manifestation of SR, known as superfluorescence (SF), an incoherently prepared system of N inverted atoms spontaneously develops macroscopic coherence from vacuum fluctuations and produces a delayed pulse of coherent light whose peak intensity ∝ N 2 . Such SF pulses have been observed in atomic and molecular gases, and their intriguing quantum nature has been unambiguously demonstrated. In this review, we focus on the rapidly developing field of research on SR phenomena in solids, where not only photon-mediated coupling (as in atoms) but also strong Coulomb interactions and ultrafast scattering processes exist. We describe SR and SF in molecular centers in solids, molecular aggregates and crystals, quantum dots, and quantum wells. In particular, we will summarize a series of studies we have recently performed on semiconductor quantum wells in the presence of a strong magnetic field. In one type of experiment, electron-hole pairs were incoherently prepared, but a macroscopic polarization spontaneously emerged and cooperatively decayed, emitting an intense SF burst. In another type of experiment, we observed the SR decay of coherent cyclotron resonance of ultrahigh-mobility two-dimensional electron gases, leading to a decay rate that is proportional to the electron density. These results show that cooperative effects in solid-state systems are not merely small corrections that require exotic conditions to be observed; rather, they can dominate the nonequilibrium dynamics and light emission processes of the entire system of interacting electrons.

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Section: A Excitonic Superradiance In Semiconductormentioning

confidence: 99%

Dicke superradiance in solids [Invited]

et al. 2016

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“…12 In addition, the planar microcavity has a Lorentzian broadening at each resonant modes (with broadening width equals to 1% of each resonant mode). 13 As the cavity length is less than half of the wavelength of the emitted photon, the stationary current is inhibited. This is because the energy of the photon generated by the quantum dot is less than the cut-off frequency of the planar microcavity.…”

Section: Current Through One Quantum Dot and Purcell Effectmentioning

confidence: 99%

Current Induced Entanglement of Double Quantum Dot Excitons

Chen

Chuu

2003

Int. J. Nanosci.

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We propose to measure Purcell effect by observing the current through a semeiconductor quantum dot embedded inside a microcavity. The stationary current is shown to be altered if one varies the cavity length. For the double-dot system, we find that the stationary current shows oscillatory behavior as one varies the inter-dot distance. Furthermore, the current is suppressed if the dot distance is small compared to the wavelength of the emitted photon. This photon trapping phenomenon generates the entangled state and may be used to control the emission of single photons at predetermined times.

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“…Also, the planar microcavity is assumed to have a Lorentzian broadening at each resonant mode (with broadening width equals to 1% of each resonant mode). [16] As the cavity length is shorter than one half the wavelength of the emitted photon (L < λ 0 /2), the decay rate is inhibited because of the cut-off frequency of the cavity. When the cavity length exceeds some multiple wavelength, it opens up another decay channel for the quantum ring exciton and turns out that there is an abrupt enhancement on the decay rate.…”

mentioning

confidence: 99%

Shot noise of quantum ring excitons in a planar microcavity

2005

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Shot noise of quantum ring (QR) excitons in a p-i-n junction surrounded by a microcavity is investigated theoretically. Some radiative decay properties of a QR exciton in a microcavity can be obtained from the observation of the current noise, which also gives the extra information about one of the tunnel barriers. Different noise feature between the quantum dot (QD) and QR is pointed out, and may be observed in a suitably designed experiment.Comment: 4 pages, 4 figures, to appear in Phys. Rev. B (2005

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Decay rate and renormalized frequency shift of a quantum wire Wannier exciton in a planar microcavity

Cited by 13 publications

References 26 publications

Dicke superradiance in solids [Invited]

Dicke superradiance in solids [Invited]

Current Induced Entanglement of Double Quantum Dot Excitons

Shot noise of quantum ring excitons in a planar microcavity

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